Paper-bag machine



No. 626,369. Patented June 6, I899. J. DUERING.

PAPER BAG MACHINE.

(Application filed Mar. 22, 1898.)

4 Sheets-Sheet I.

QNO Model.)

In ventor.

Witnesses.

Attorney.

'No. 626,369. Patented June 6, I899.

J. DUERING.

PAPER BAG MACHINE.

(Application filed Mar. 22, 1698.)

4 Sheets-Sheet 2,

(No Modal.)

Inventor.

A t/tb 1 ney.

: norms vnws 0o. wow-Luna" w No. 626,369. Patented June 6, I899. J. DOEBING.

PAPER BAG MACHINE.

(Application filed Mar. 22, 1898.) (No Model.) 4 Sheets$heat 3.

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No. 626,369. Patented June 6, I899.

, J. DOERING.

PAPER BAG MACHINE.

(Application filed Mar. 22, 1898.) (No Model.)

4 SheetsShaet 4.

W itneSSes.

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Fig. 2.

UNITE STATES PATENT FFICE.

JUSTUS DOERING, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE UNION BAG AND PAPER COMPANY, OF CHICAGO, ILLINOIS.

PAPER-BAG MACHINE.

SPECIFICATION forming part of Letters Patent No. 626,369, dated June 6, 1899.

Application filed March 22, 1898.

To aZZ whom it may concern.

Be it known that I, J USTUS DOERING, a citizen of the United States of America, residing in the city and county of Philadelphia, in the State of Pennsylvania, have invented a certain new and useful Improvement in Paper- Bag Machines, of which the following isatrue and exact description, reference being had to the accompanying drawings, which form a part hereof.

Myinvention relates particularly to that class of paper-bag machines which are adapted to make what is generally known as the satchel bottomed bellows folded paper bag, and the object of my invention is to provide a simple mechanism whereby such bags may be made with great rapidity and at the same time without unduly rapid movements of operative parts of the machine.

The nature of my improvements will be best understood as described in connection with the drawings, in which they areillustrated, and in which- Figure 1 is a plan view of-a machine embodying myinvention; Fig. 2, a longitudinal section taken as on the line 1 l of Fig. 1; Fig. 3, a cross-section taken as on the line 2 2 of Fig. 4: is a plan view of a portion of the mechanism on an enlarged scale; Fig. 5, a similar enlarged view of the same portion of the mechanism shown in elevation. Fig. 6 is a perspective view illustrating another detail of construction; Fig. 7, a cross-sectional view taken as on the line 4 at of Fig. 6; Figs. 8 and 9, plan views showing the operation of the folding-blades upon the bellowsfolded paper tube; Fig. '10, a front view taken as on the section-line 5 5 of Fig. 8, showing the engagement of the folding-blades with the tube; and Fig. 11, a detail showing the nipper by which the paper tubes are grasped to the apron.

A indicates the frame of the machine, upon which, as shown, are mounted the shafts B and 13, each carrying chain orsprocket wheels, as indicated at B B and one, the shaft B, as shown in the drawings, being provided with fast and loose pulleys, as indicated at B and 13 C 0 indicate guides arranged between the sprocket-wheels and serving to support the Serial No. 674,758. (No model.)

apron, to be hereinafter described, as it passes through the operative portion of its travel.

D D indicate chains formed of pivot+links arranged to pass over and engage with the sprocket-wheels B" B and supporting the plates D'D, making up the apron ofthe ma chine, and upon which apron the blanks to be operated upon are delivered and to which apron the devices for operating upon the blanks are secured. At regular intervals, somewhat in excess of the length of a bagblank, the plates D are perforated, as indi cated at D and provided with nippers E, which, as shown, are secured on levers E, fastened to rock-shafts E which rock-shafts are provided with springs E which normally hold the nippers closed down, as indicated in Fig. 11. The shafts E are also provided with lever-arms E, which as the belt travels come first in contact with a pin M, which opens the jaw and enables it to engage the front end of a bag-blank to be operated upon, the said levers E coming next in contact with a pin M, which again opens the nipper, releasing its hold upon the bag-blank. Secured to the apron and somewhat in the rear of each nipper E are the pivot-pins F F, one pair lying upon each side of the portion of the apron upon which the blank rests, and upon these pins are pivoted the folding-blade frames, (indicated at F Ft) the portion F being slotted, as indicated at f, and traversed by the pivot-pin F having its bearingin the frame,- and, as shown, a head f, to which the movable blades G are attached.

G is a fixed foldingblade, which is rigidly fastened to the portion F of the frame, as indicated at g g.

G is movable folding-blade having in that part which comes in contact with the paper blank a substantially identical form with that of the blade G, and (l is another movable folding-blade lying in normal position above the blade G and intended to lie upon the top of the tube-blank and to define a line of fold about which the blank is opened. Both of the blades G and G3 are fastened to thehead f of the shaft F and a spring, such as that indicated at F, normally holds the blades in the position indicated in Figs. 4. and 5.

G is a supplemental or gripping blade pivoted on the-rearedge of the blade G bybeing.

fastened to' a' sh aft whichhasitsbearings in 7 the standards H H, said standards projecting,

as shown, from the face of blades G, and which shaft is acted upon by a spring H so asr to' normally keep the gripper blade- G?- pressed down upon the blade G.

9 indicates a heel extension of'the nipper G extending up substantially at right angles to the blade.

F is a standard extending up from the plate D, to which the pivot-pin F is secured, and

- having extendingfrom it the bar F which. in the retracted position of the frame lies in front of the heel extension 9 andinsuchposition that as the frame is swung forward it opens the nipper by 'acting onthis-heel ex? tens-ion and'releases its hold, permittingxthe nipper G to close when the folders have come to operative position, as indicated at:the ends iii-'Figlili ,F jis-apost'orstandard extending up fromtirefra-me-F F asshown, and'carryinga rol ler F on*its end-in position to be acted on I-an'd'l' are lever-arms secured to'the shaft' F and anglin gt to' each other preferably, as shown, slightly-over ninetydegrees. t and 11 f are'rol l ers secured on -these levers.-

'J isa former through-which the bellows folded tubesarefed tothe apron. As shown itF'is-fo'rmed*with the-top plate J and bottom pvl ateel and the inwardly-extendingen d walls,

asindic'ated--at J 3 J these end :walls continuin-g expanded, as in-dicated at-J and 1. (See Fig. 6. I

ing- Joeyond the top and bottom plates and beind'icate a stationary-cam-surface,

formed, preferably, as shown, on the front of aplate-Kfl' securedgto the frame ofthe'machine and in such position that its cam edge will come-in contact 'withthe roller F at'the topof the-post F ated'on each side of the apron, and its op eration is ,-.byacting through the post F to press the folding p'late frame in, hold it in, and-allow-it'to -be retracted at propertimes. 11,1), L L and L -indicateanother stationary cam, of Whichthere is one situated on each side of 'the apron and which is placed so as to engage and' operate the rollers 41 and i, the form of the cambeing regulated notonly by th eeffe'ct to be produced on the shaft-F but also in accordance with the form of the cam which operates the frame; so as to keep in contact with-therollers.-

NNarefolder-plates of usual and well-understood formz- O, Eigs.- Sand 9, indicatesa bellows-folded paper tube having the front end ofits lower ply'(i ndicated at 0) extending somewhat -be-' yondits upper-ply and preferably formed with slits 0 0 in its upper and lower plies, 0" 'indicatin g the bellows-fold.

0 indicates the line on the npper'plyof the paper about "whichthe tube isopened or distended, the portion of the under ply ex- Oneof these camsis situ-= tending beyondvthis line-beingindicated in' Fig. 8 at O and the portion of the upperply extending beyond this line and folded back being indicated atO In the act of opening the bellows fold the inward triangular fold (indicated at O is formed in a well-known Way and aflap O folded in toward the center bottom plates its frontlower ply: is-.- engaged by one of the nippers -E and grasped tightly to the face-of one of the plates D of the apron, with which it accordingly moves until the hold of the gripper is released. As the apron movesforward afterengaging a blank the roller F rides up on the surface K of the cam and pushes the frame F F in, so that the blades G and- G pass between the plates J and J and between the plies of the bellowsfolds-of the blank, While at=the same time the plate G passes ab'ove the plate J and over th'etop'ply of the bag. The operation is-indicatedin Fig.6 and the final position {ofthe parts-in Fig. 8; As the frame moves inward the heel extension 9 of the gripper G comes in -contact with the bar F and is pushed backward, opening the gripper-blade, jso that it, like the plate G passesabove the ';upper ply of the bag, and after the heel ex- Ztension has cleared th'e-barF it snaps-downand grips th'e upper ply tightly against the- After the folding-blades havebeen' Eblade G. brought to proper positionthat indicated in Fig; 8the-roller 'comes in contact with the foam-surface L andis-pushed backward, movjingwith it, ofcourse, the shaft "F and the ibladesG and G andlalso throwing up the lever l, with its roller 11", which as the roller't' reaches the lowest part of the surface L moves 1 into the cam-surface L and is then engaged byth e cam-surface L and pushed backward ;by said surface, so as to rotate the shaft]?- and'the blades attached to it'in thesame ibackward direction and-until they have accomplished a m ovement of approximately one: hundred and eighty degrees, after which the jroller trunsalong the flat surface L of the cam, holding the blades in that position, while: the-bag-blank distended, as indicated in Fig.

,9, is, drawn between the folding-plates NN, jwhich plates compact and make permanent Zthefolds indicated in Fig. 9. Aftertheblank has passed between these folders the receding 'cam-face K permits the post F and the blade iframe attached to. it to move outwardly until he blades are disengaged from the blank, and

IOO

hen the roller 1" is permitted to moveforward Lyy the conformation of the cam-surface L nd after leaving this surface the foldin iblacles are moved forward to their normal position ready to be engaged with another blank, when they again come in registry with the mechanism through which the blank is fed to the machine. I

Having thus described my invention, What Iclaim as new, and desire to seen re by Letters Patent, is

1. In a paper-bag machine,an endless apron in combination with drums over which said apron travels, a series of separate mechanisms for opening bellows-folded tubes each secured to and moving with the apron, cams for operating said opening device fixed in position and acting on the opening devices as they come by turn into registry therewith and means for delivering tubes to the opening devices arranged at one point on the path traveled by the apron.

2. In a paper-bag machine,an endless apron in combination with drums over which said apron travels, a series of separate mechanisms for opening bellows-folded tubes each secured to and moving with the apron, cams for operating said opening devices as they come by turn into registry therewith, sta tionary folders as N N arranged to flatten the opened ends of the tubes as they pass, and means for delivering tubes to the opening devices arranged at one point on the path traveled by the apron.

In a paper-bag machine, a revolving supportingsurface moving constantly in one direction in combination with a series of sets of folding-blades pivotally secured to said surface so as to be oscillatable on its face, one or more levers as I I arranged to operate the movable folding-blades of each set, fixed cams arranged to operate each set of folding-blades in turn to move them to and from a position to engage a blank, other fixed cams arranged to engage and operate the levers as I I also in turn and after the set of blades to which they belong has been brought to operative position by the first cams, and means for delivering tubes to the supporting-surface aforesaid so as to bring each tube under the action of a separate set of folding-blades.

4. In apaper-bag machine,an endless apron as D D having a series of nippers, as E, at intervals to engage tubes in combination with a corresponding series of folding-plate frames F F pivoted as at F F, &c., on the face of the apron, means, as springs F for holding said frames in a normally-retracted position, camstandards as F for moving the frames, the fixed blade G secured to the frame, the movable blades G' G secured to a shaft F pivoted in said frame, the lever cam-arms I I secured to said shaft, means, as spring F for holding blades G G3 normally closed down over blade G, fixed cams as K, K K for operating on the standards F and fixed cams as L, L, L L L for acting on the levers I I substantially as specified.

JUSTUS DOERING.

Witnesses: I

ALMON P. WINT, CHARLES RUPP. 

